Nissan GT-R (R35) · Service Manual TRANSMISSION & DRIVELINE

U1000 CAN COMM CIRCUIT

TRANSMISSION: GR6Z30A

U1000

Description


CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control unit is connected with 2 communication lines (CAN-H and CAN-L) allowing a high rate of information transmission with less wiring. Each control unit communicates data but selectively reads required data only.

DTC Logic

 
 DTC DETECTION LOGIC

DTC
Self-diagnosis name
DTC detecting condition
Possible cause
U1000
CAN communication line
When TCM is not transmitting or receiving CAN communication signal for 2 seconds or more.
Harness or connectors
(CAN communication line is open or shorted.)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.CHECK DTC DETECTION

Diagnosis Procedure


 
 1.CHECK DTC WITH TRANSMISSION
 
 2.CHECK INTERMITTENT INCIDENT